Home / 78,463.05-117,693.51-19,299.23

Finding the Fourth Proportional to 78,463.05, 117,693.51 and 19,299.23

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Solution

The fourth proportional to 78,463.05, 117,693.51 and 19,299.23 is: 28,948.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,463.05 : 117,693.51 = 19,299.23 : x
  2. Step 2: Convert to fraction form
    78,463.05/117,693.51 = 19,299.23/x
  3. Step 3: Cross multiply
    78,463.05x = 117,693.51 × 19,299.23
  4. Step 4: Simplify right side
    78,463.05x = 2,271,393,899.51
  5. Step 5: Solve for x
    x = 2,271,393,899.51/78,463.05
  6. Step 6: Final answer
    x = 28,948.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.